[interchange] Clear or don't check $@ in cases where eval is not called

commit 9bba0b5e907712fdc14cd6c947ffb83489efd66d
Author: Jon Jensen <[email protected]>
Date:   Wed Nov 1 19:15:24 2017 -0600

    Clear or don't check $@ in cases where eval is not called
    
    The contents of $@ are unknown if eval isn't run, so we can't rely on it
    unless we set it ourselves.

 lib/Vend/Config.pm     |   14 ++++++--------
 lib/Vend/DbSearch.pm   |    9 +++++----
 lib/Vend/Glimpse.pm    |    8 +++++---
 lib/Vend/RefSearch.pm  |    6 ++++--
 lib/Vend/Search.pm     |    6 ++++--
 lib/Vend/Session.pm    |    4 +++-
 lib/Vend/Ship.pm       |    4 +++-
 lib/Vend/TextSearch.pm |    7 ++++---
 8 files changed, 34 insertions(+), 24 deletions(-)
---
diff --git a/lib/Vend/Config.pm b/lib/Vend/Config.pm
index 662beec..69bdd8c 100644
--- a/lib/Vend/Config.pm
+++ b/lib/Vend/Config.pm
@@ -54,7 +54,7 @@ use Vend::Data;
 use Vend::Cron;
 use Vend::CharSet ();
 
-$VERSION = '2.249';
+$VERSION = '2.250';
 
 my %CDname;
 my %CPname;
@@ -787,10 +787,8 @@ sub global_chunk {
 		eval {
 			$GlobalRead->($lvar, $value);
 		};
-		if($@ =~ /Duplicate\s+usertag/i) {
-			next;
-		}
-		if($@) {
+		if ($@) {
+			next if $@ =~ /Duplicate\s+usertag/i;
 			::logDebug("error running global $lvar: $@");
 		}
 	}
@@ -865,9 +863,7 @@ sub code_from_file {
 		eval {
 			$GlobalRead->($lvar, $value);
 		};
-		if($@ =~ /Duplicate\s+usertag/i) {
-			next;
-		}
+		next if $@ =~ /Duplicate\s+usertag/i;
 	}
     close SYSTAG;
     close NEWTAG;
@@ -2201,6 +2197,8 @@ sub parse_action {
 	$sub =~ s/^\s*((?s:.)*\S)\s*//;
 	$sub = $1;
 
+	# clear errors for code paths below that don't call eval or reval
+	undef $@;
 	if($sub !~ /\s/) {
 		no strict 'refs';
 		if($sub =~ /::/ and ! $C) {
diff --git a/lib/Vend/DbSearch.pm b/lib/Vend/DbSearch.pm
index 6ff26ad..1532cea 100644
--- a/lib/Vend/DbSearch.pm
+++ b/lib/Vend/DbSearch.pm
@@ -2,7 +2,7 @@
 #
 # Adapted for use with Interchange from Search::TextSearch
 #
-# Copyright (C) 2002-2007 Interchange Development Group
+# Copyright (C) 2002-2017 Interchange Development Group
 # Copyright (C) 1996-2002 Red Hat, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
@@ -25,7 +25,7 @@ require Vend::Search;
 
 @ISA = qw(Vend::Search);
 
-$VERSION = substr(q$Revision: 2.27 $, 10);
+$VERSION = '2.28';
 
 use Search::Dict;
 use strict;
@@ -198,7 +198,9 @@ sub search {
 	if ($s->{mv_search_error}) {
  		return $s;
  	}
-	
+
+	# clear errors for non-eval code paths below
+	undef $@;
 	if ($s->{mv_coordinate}) {
 		undef $f;
 	}
@@ -219,7 +221,6 @@ sub search {
 											),
 										@pats					)};
 	}
-
 	$@  and  return $s->search_error("Function creation: $@");
 
 	my $qual;
diff --git a/lib/Vend/Glimpse.pm b/lib/Vend/Glimpse.pm
index 33ca3d6..97606c6 100644
--- a/lib/Vend/Glimpse.pm
+++ b/lib/Vend/Glimpse.pm
@@ -2,7 +2,7 @@
 #
 # Adapted for use with Interchange from Search::Glimpse
 #
-# Copyright (C) 2002-2007 Interchange Development Group
+# Copyright (C) 2002-2017 Interchange Development Group
 # Copyright (C) 1996-2002 Red Hat, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
@@ -24,7 +24,7 @@ package Vend::Glimpse;
 require Vend::Search;
 @ISA = qw(Vend::Search);
 
-$VERSION = substr(q$Revision: 2.16 $, 10);
+$VERSION = '2.17';
 use strict;
 use Vend::File;
 use Vend::Util;
@@ -189,6 +189,8 @@ sub search {
 
 	my $joiner = $s->{mv_orsearch}[0] ? ',' : ';';
 
+	# clear errors for non-eval code paths below
+	undef $@;
 	if ($s->{mv_coordinate}) {
 		undef $f;
 	}
@@ -213,8 +215,8 @@ sub search {
 											),
 										@pats					)};
 	}
-
 	$@  and  return $s->search_error("Function creation: $@");
+
 	local($/) = $s->{mv_record_delim} || "\n";
 
 	$s->save_specs();
diff --git a/lib/Vend/RefSearch.pm b/lib/Vend/RefSearch.pm
index e58b0b6..d5e9b5b 100644
--- a/lib/Vend/RefSearch.pm
+++ b/lib/Vend/RefSearch.pm
@@ -2,7 +2,7 @@
 #
 # Adapted for use with Interchange from Search::TextSearch
 #
-# Copyright (C) 2002-2007 Interchange Development Group
+# Copyright (C) 2002-2017 Interchange Development Group
 # Copyright (C) 1996-2002 Red Hat, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
@@ -25,7 +25,7 @@ require Vend::Search;
 
 @ISA = qw(Vend::Search);
 
-$VERSION = substr(q$Revision: 2.11 $, 10);
+$VERSION = '2.12';
 
 use strict;
 no warnings qw(uninitialized numeric);
@@ -129,6 +129,8 @@ sub search {
 
 	@pats = $s->spec_check(@specs);
 
+	# clear errors for non-eval code path
+	undef $@;
 	if ($s->{mv_coordinate}) {
 		undef $f;
 	}
diff --git a/lib/Vend/Search.pm b/lib/Vend/Search.pm
index 6689aef..10f5300 100644
--- a/lib/Vend/Search.pm
+++ b/lib/Vend/Search.pm
@@ -964,8 +964,10 @@ EOF
 		::logDebug("filter function code is: $f")
 			if $Global::DebugFile and $CGI::values{debug};
 		use locale;
-		$f = eval $f if $f and ! ref $f;
-		die($@) if $@;
+		if ($f and ! ref $f) {
+			$f = eval $f;
+			die($@) if $@;
+		}
 		my $relate;
 		if(scalar @code > 1) {
 			$relate = 'return ( ';
diff --git a/lib/Vend/Session.pm b/lib/Vend/Session.pm
index a70387a..7eb23e2 100644
--- a/lib/Vend/Session.pm
+++ b/lib/Vend/Session.pm
@@ -1,6 +1,6 @@
 # Vend::Session - Interchange session routines
 #
-# Copyright (C) 2002-2013 Interchange Development Group
+# Copyright (C) 2002-2017 Interchange Development Group
 # Copyright (C) 1996-2002 Red Hat, Inc.
 #
 # This program was originally based on Vend 0.2 and 0.3
@@ -466,6 +466,8 @@ sub read_session {
 		
 #::logDebug ("Session:\n$s\n");
 	return new_session($seed) unless $s;
+
+    undef $@;
     $Vend::Session = ref $s ? $s : evalr($s);
     die "Could not eval '$s' from session dbm: $@\n" if $@;
 
diff --git a/lib/Vend/Ship.pm b/lib/Vend/Ship.pm
index 9dd417d..160339d 100644
--- a/lib/Vend/Ship.pm
+++ b/lib/Vend/Ship.pm
@@ -1,6 +1,6 @@
 # Vend::Ship - Interchange shipping code
 # 
-# Copyright (C) 2002-2015 Interchange Development Group
+# Copyright (C) 2002-2017 Interchange Development Group
 # Copyright (C) 1996-2002 Red Hat, Inc.
 #
 # This program was originally based on Vend 0.2 and 0.3
@@ -329,6 +329,8 @@ sub read_shipping {
 			$zone = $1 if ! $zone;
 			next if defined $zones{$zone};
 			my $ref;
+			# clear errors for non-eval code paths below
+			undef $@;
 			if ($o->{zone}) {
 				$ref = {};
 				my @common = qw/
diff --git a/lib/Vend/TextSearch.pm b/lib/Vend/TextSearch.pm
index 910b25f..b931c18 100644
--- a/lib/Vend/TextSearch.pm
+++ b/lib/Vend/TextSearch.pm
@@ -2,7 +2,7 @@
 #
 # Adapted for use with Interchange from Search::TextSearch
 #
-# Copyright (C) 2002-2008 Interchange Development Group
+# Copyright (C) 2002-2017 Interchange Development Group
 # Copyright (C) 1996-2002 Red Hat, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
@@ -27,7 +27,7 @@ require Exporter;
 use vars qw(@ISA);
 @ISA = qw(Vend::Search);
 
-$VERSION = substr(q$Revision: 2.18 $, 10);
+$VERSION = '2.19';
 
 use Search::Dict;
 use strict;
@@ -144,6 +144,8 @@ sub search {
 
 	@pats = $s->spec_check(@specs);
 
+	# clear errors for non-eval code paths
+	undef $@;
 	if ($s->{mv_coordinate}) {
 		undef $f;
 	}
@@ -164,7 +166,6 @@ sub search {
 											),
 										@pats					)};
 	}
-
 	$@  and  return $s->search_error("Function creation: $@");
 	
 	local($/) = $s->{mv_record_delim} || "\n";